JP5618950B2 - Vehicle door structure - Google Patents

Description

  The present invention relates to a vehicle door structure.

  Patent Document 1 below discloses a structure in which an inner weather strip having two seal lips that are in sliding contact with the inner surface of the windshield is disposed inside the windshield inside the side door.

JP 2010-149579 A

  In the case of the above-mentioned Patent Document 1, in order to reduce the sliding resistance of the window glass, it is necessary to reduce the pressing force of the seal lip to the window glass. There is a possibility that the sound insulation effect of insulating the sound entering the vehicle interior from the vehicle will be reduced.

  Furthermore, it is desirable that the inner weather strip be easily formed when the sound insulation effect is enhanced by the weather strip shape or the like.

  In consideration of the above facts, an object of the present invention is to provide a vehicle door structure that can easily form a weather strip and can enhance the sound insulation effect of sound that enters the vehicle interior from the outside of the vehicle.

  According to a first aspect of the present invention, a vehicle door structure includes a door body that supports a door glass so that the door glass can be moved up and down, a wall that is provided in the door body and has an opening formed at a position facing the door glass, and the wall A weather strip having an elastically deformable seal lip that protrudes from the door glass and is disposed so as to be in sliding contact with the door glass, and is provided on the inner side in the door width direction of the door glass from the door glass. And a door trim that forms a closed space that communicates with the opening with the weather strip.

  According to a second aspect of the present invention, in the vehicle door structure according to the first aspect, the weather strip includes a concave portion having a part of the wall and a concave section as viewed in the front-rear direction of the door. The closed space is formed by the inner wall portion of the door trim closing the concave portion.

  According to a third aspect of the present invention, in the vehicle door structure according to the second aspect, the inner wall portion of the door trim includes a rib protruding toward the weather strip, and the rib and the inner wall portion of the door trim close the concave portion. It is supposed to be configured.

  According to a fourth aspect of the present invention, in the vehicle door structure according to the first aspect, the closed space protrudes from the inner wall of the door trim to the weather strip side and contacts a portion of the wall opposite to the door glass. Are provided with two ribs.

  According to the first aspect of the present invention, the weather strip provided on the door body is provided with a wall having an opening formed at a position facing the door glass and a seal lip protruding from the wall. The seal lip is in sliding contact with the door glass. A door trim is provided on the inside of the door body from the door glass in the width direction of the door, and a closed space arranged on the opposite side of the weatherstrip wall from the door glass and communicating with the opening is formed by the weatherstrip and the door trim. Yes. This constitutes a spring mass system in which the air in the opening is a mass and the closed space behind the opening is a spring, and the air in the opening vibrates significantly when a sound of a specific frequency is hit. As a result, the sound energy is changed to vibration energy, and the vibration energy is changed to heat energy by the viscous resistance and friction of air, thereby reducing the sound. For this reason, the sound of a specific frequency can be reduced and the sound insulation effect of the sound which penetrates into a vehicle interior from the outside of a vehicle can be heightened.

  Furthermore, by forming the closed space communicating with the opening with the weather strip and the door trim, the cross-sectional shape of the weather strip can be an open cross-sectional shape. As a result, compared to the case where the closed space communicating with the opening is formed only by the weather strip (when the weather strip is provided with a closed cross section), the weather strip has an open cross sectional shape. Sizing at the time of molding (preventing deformation by cooling) is possible, and quality such as shape and dimensions can be improved.

  According to the second aspect of the present invention, the weather strip has a concave portion having a wall partly formed in the longitudinal direction of the door and having a concave cross section, and the inner wall portion of the door trim is a concave portion. A closed space is formed by closing the door. This makes it easy to mold the concave portion (open cross section) of the weather strip, enables sizing at the time of molding, and improves the quality such as shape and dimensions.

  According to the third aspect of the present invention, the inner wall portion of the door trim is provided with a rib projecting toward the weather strip, and the rib and the inner wall portion of the door trim close the concave portion, and the door trim and the weather strip are closed. A space can be easily formed.

  According to the fourth aspect of the present invention, the inner wall of the door trim is provided with two ribs protruding toward the weather strip, and the two ribs contact a portion of the weather strip wall opposite to the door glass. Thus, a closed space is formed. Accordingly, the closed space can be easily formed by the wall of the weather strip and the door trim, and sizing at the time of forming the weather strip is possible, and the quality of the shape, dimensions, and the like can be improved.

  According to the vehicle door structure of the present invention, it is easy to form a weather strip, and it is possible to enhance the sound insulation effect of sound entering the vehicle interior from the outside of the vehicle.

It is a block diagram which shows the vehicle inner side of the front side door to which the vehicle door structure which concerns on 1st Embodiment was applied. It is a longitudinal cross-sectional view which shows the structure of the vehicle door structure along line 2-2 in FIG. It is a perspective view which shows the inner weather strip used for the vehicle door structure which concerns on 1st Embodiment. It is a cross-sectional view which shows the closed space formed with the wall in which the through-hole in the inner weather strip was formed, and the inner weather strip and the door trim. It is a figure which shows the spring mass system by the through-hole shown in FIG. 4, and the closed space behind it. It is a graph which shows the relationship between a frequency and the sound reduction effect. It is a longitudinal cross-sectional view which shows the inner weather strip used for the vehicle door structure which concerns on 1st Embodiment. It is a figure which shows typically the sizing process at the time of shaping | molding of the recessed part of an inner weather strip, (A) is a figure which shows the state which open | released the sizing metal mold | die, (B) closed the sizing metal mold | die. FIG. It is a longitudinal cross-sectional view which shows the structure of the vehicle door structure which concerns on 2nd Embodiment. It is a longitudinal cross-sectional view which shows the structure of the vehicle door structure which concerns on 3rd Embodiment. It is a longitudinal cross-sectional view which shows the structure of the vehicle door structure which concerns on 4th Embodiment. It is a longitudinal cross-sectional view which shows the structure of the vehicle door structure which concerns on a 1st comparative example. It is a longitudinal cross-sectional view which shows the structure of the vehicle door structure which concerns on a 2nd comparative example. It is a longitudinal cross-sectional view which shows the inner weather strip used for the vehicle door structure which concerns on a 2nd comparative example. It is a figure which shows typically the sizing process at the time of shaping | molding of the closed cross-section part of the inner weather strip shown in FIG. 14, (A) is a figure which shows the state which open | released the sizing metal mold | die, (B) is sizing. It is a figure which shows the state which closed the metal mold | die.

  Hereinafter, a first embodiment of a vehicle door structure according to the present invention will be described with reference to FIGS. In these drawings, an arrow FR appropriately shown indicates the vehicle front side, an arrow UP indicates the vehicle upper side, and an arrow OUT indicates the vehicle width direction outer side.

  FIG. 1 shows a front side door to which a vehicle door structure according to the present embodiment is applied as viewed from the inside of the vehicle. 2 shows a longitudinal sectional view of the front side door taken along line 2-2 in FIG. As shown in these drawings, a front side door 10 as a vehicle door is provided on a side portion (not shown) of the vehicle, and the front side door 10 is a front door provided on a side portion of the vehicle. It is attached to an opening (not shown) so that it can be opened and closed. The front side door 10 includes a door main body 12 configured to include a door outer panel (not shown) disposed on the outer side in the vehicle width direction and a door inner panel 14 disposed on the inner side in the vehicle width direction. The edge portion 14B except for the upper edge portion 14A of the door inner panel 14 is integrated with the edge portion other than the upper edge portion of the door outer panel (not shown) by hemming, so that the door inner panel 14 and the door outer panel are integrated. Are formed in a closed cross-sectional structure. The vehicle door structure 28 of the present embodiment is applied to the front side door 10.

  The front side door 10 is inserted into the door body 12 through a gap between the upper edge portion 14A of the door inner panel 14 and the upper edge portion of the door outer panel (not shown), and can be moved up and down in the vehicle vertical direction. Is provided with a window glass (door glass) 18. A door frame 20 for guiding the window glass 18 at the time of ascending / descending is attached to the vehicle upper side of the door body 12 in a gate shape in a side view of the vehicle. That is, the door body 12 supports the window glass 18 disposed inside the door frame 20 in a vehicle side view so as to be opened and closed.

  As shown in FIG. 2, a door inner reinforcement 24 is disposed on the inner side of the upper portion of the door inner panel 14 in the vehicle width direction, and is formed at the upper edge portion 14 </ b> A of the door inner panel 14 and the upper end of the door inner reinforcement 24. The vertical wall portion 24A is joined by welding or the like in a surface contact state. A curved surface-like projecting portion 24B that projects inward in the vehicle width direction is formed at the vehicle vertical direction intermediate portion of the vertical wall portion 24A of the door inner reinforcement 24.

  In the vehicle door structure 28, an inner weather strip 30 as an example of a weather strip is attached to a joint portion between the upper edge portion 14A of the door inner panel 14 and the vertical wall portion 24A of the door inner reinforcement 24. Further, on the inner side of the door body 12 in the vehicle width direction (vehicle compartment 26 side), the vehicle inner side surface of the door inner panel 14 and the door inner reinforcement 24 from the upper end portion of the door inner panel 14, the door inner reinforcement 24 and the inner weather strip 30. A door trim 46 is attached to cover the door.

  As shown in FIGS. 2 and 3, the inner weather strip 30 is a long member provided along the vehicle front-rear direction on the upper portion of the door inner panel 14. The inner weather strip 30 includes a concave portion 32 having a substantially “U” -shaped cross section with an opening 31 on the vehicle upper side. The concave portion 32 includes a vertical wall (wall) 32A extending outward in the vehicle width direction along the vehicle vertical direction, a bottom wall 32B extending inward in the vehicle width direction from the lower end of the vertical wall 32A, and the vehicle of the bottom wall 32B. A vertical wall 32C extending from the inner end to the vehicle upper side. The lower end portion of the vertical wall 32A arranged on the outer side in the vehicle width direction extends to the vehicle lower side than the bottom wall 32B.

  Further, the inner weather strip 30 includes an attachment portion 34 that extends inward in the vehicle width direction from the upper end portion of the vertical wall 32C and is bent in a substantially L shape on the vehicle lower side, and the wind glass 18 side from the outer surface of the vertical wall 32A. And two through-holes 38 as an example of openings formed in the vertical wall 32A between the two seal lips 36.

  The mounting portion 34 of the inner weather strip 30 is formed with an opening on the lower side of the vehicle, and is externally inserted into a joint portion between the upper edge portion 14A of the door inner panel 14 and the vertical wall portion 24A of the door inner reinforcement 24. It attaches by the clip (illustration omitted).

  A vertical wall (wall) 32A constituting the concave portion 32 of the inner weather strip 30 is disposed so as to face the window glass 18, and the two seal lips 36 are formed in parallel with the vertical wall 32A on the upper and lower sides of the vehicle. Has been. The vertical wall 32 </ b> A and the two seal lips 36 are arranged along the vehicle front-rear direction of the door body 12. The two seal lips 36 extend in a direction intersecting with the trajectory in which the window glass 18 moves up and down, and the seal lip 36 is in sliding contact with the window glass 18 so that the sealing property with the window glass 18 is secured. Yes.

  The through hole (opening) 38 is a position facing the wind glass 18 of the vertical wall 32 </ b> A and is formed between the two seal lips 36. A plurality of through holes (openings) 38 are formed along the longitudinal direction (vehicle front-rear direction) of the vertical wall 32A (see FIG. 3). In the present embodiment, the plurality of through holes 38 have a circular shape having substantially the same size.

  Further, the inner weather strip 30 is formed with two lips 40A and 40B that contact the door trim 46 at the upper end of the vertical wall 32A, and the lip 40C that contacts the door trim 46 at the upper end of the vertical wall 32C. Has been. Further, two lips 42 </ b> A and 42 </ b> B that abut against the door inner panel 14 are formed on the inner side surface of the vertical wall 32 </ b> C of the inner weather strip 30.

  As shown in FIG. 2, the concave portion 32 of the inner weather strip 30 includes a lip 40 </ b> A formed at the upper end portion of the vertical wall 32 </ b> A and a lip 40 </ b> C formed at the upper end portion of the vertical wall 32 </ b> C. By contacting the part, a closed space S is formed on the opposite side of the vertical wall 32A from the window glass 18. The closed space S communicates with the through hole 38 of the vertical wall 32A. In other words, the closed space S is formed by the concave portion 32 of the inner weather strip 30 and the inner wall portion of the door trim 46 behind the through hole 38 of the vertical wall 32 </ b> A with respect to the window glass 18. A closed space S is arranged along the vehicle front-rear direction of the door body 12.

  The inner weather strip 30 is integrally formed of an elastic member such as resin. In this embodiment, the inner weather strip 30 is formed by extrusion molding. Sizing at the time of molding the inner weather strip 30 will be described in detail later.

  The door trim 46 includes a resin base material 47, and an upper end portion 47 </ b> A of the base material 47 is disposed so as to go inward in the vehicle width direction from the vehicle upper side of the inner weather strip 30. The door trim 46 is provided with a skin 48 so as to cover the surface of the base material 47 and the side surface portion on the outer side in the vehicle width direction. The edge of the upper end portion 47A of the base material 47 has a substantially triangular cross section when viewed in the vehicle front-rear direction and has a shape protruding toward the vehicle lower side. The lip 40A, 40B of the vertical wall 32A of the inner weather strip 30 and the lip 40C of the vertical wall 32C abut on the inner wall portion (back surface) of the door trim 46, so that the sealability between the inner weather strip 30 and the door trim 46 is secured. Yes. Further, the lip 42A, 42B of the inner weather strip 30 abuts on the door inner panel 14, so that the sealability between the inner weather strip 30 and the door inner panel 14 is secured.

  Next, the operation and effect of the present embodiment will be described with reference to FIGS.

  FIG. 4 shows a closed space S formed by the recessed portion 32 of the inner weather strip 30 and the door trim 46 used in the vehicle door structure 28 in a cross-sectional view along the vehicle front-rear direction. As shown in FIG. 4, a plurality of through holes 38 are formed along the longitudinal direction of the inner weather strip 30 in the vertical wall 32 </ b> A facing the window glass 18 (see FIG. 2). A closed space S communicating with the plurality of through holes 38 is formed on the opposite side of the vertical wall 32A from the window glass 18 by the concave portion 32 of the inner weather strip 30 and the door trim 46 (see FIG. 2). In the closed space S formed by the concave portion 32 of the inner weather strip 30 and the door trim 46 (see FIG. 2), a virtual wall 33 orthogonal to the vertical wall 32A is disposed between the adjacent through holes 38. . By these virtual walls 33, spaces S1 communicating with the respective through holes 38 are formed behind the vertical wall 32A (on the side opposite to the window glass 18).

  As shown in FIGS. 4 and 5, in such a vehicle door structure 28, the air in the portion of the through hole 38 is the mass 62, and the concave portion 32 and the door trim 46 of the inner weather strip 30 behind the vertical wall 32 </ b> A. A one-degree-of-freedom spring mass system 60 in which the space S1 formed by the virtual wall 33 becomes the spring 64 is configured. In the one-degree-of-freedom spring mass system 60, when a sound of a specific frequency hits the air mass 62 in the through hole 38, the mass 62 extends in the expansion / contraction direction of the spring 64 (in a direction orthogonal to the vertical wall 32C indicated by the arrow). Vibrates vigorously. As a result, the sound energy changes to vibration energy, and the vibration energy changes to thermal energy due to the viscous resistance and friction of air, so that the sound of a specific frequency is significantly reduced.

  Here, if the length of the through hole 38 is l, the area of the through hole 38 is S, the volume of the space S1 behind the through hole 38 is V, and the sound speed is c, the sound reduction frequency f is expressed by the following equation. expressed.

この式に示されるように、音の低減効果が出る周波数は、貫通孔３８の大きさと、貫通孔３８の背後の空間Ｓ１の体積（容積）で決まる。図６に示されるように、１自由度のバネマス系６０であるので、共振した場合に（特定の周波数で）著しく音が低減される。また、図６に示されるように、貫通孔３８の大きさと、貫通孔３８の背後の空間Ｓ１の体積（容積）を変更することで、音の低減効果が出る周波数６６Ａ、６６Ｂ、６６Ｃが変化する。

As shown in this equation, the frequency at which the sound reducing effect is produced is determined by the size of the through hole 38 and the volume (volume) of the space S1 behind the through hole 38. As shown in FIG. 6, since the spring mass system 60 has one degree of freedom, the sound is remarkably reduced (at a specific frequency) when resonating. Further, as shown in FIG. 6, by changing the size of the through hole 38 and the volume (volume) of the space S1 behind the through hole 38, the frequencies 66A, 66B, and 66C that produce a sound reduction effect change. To do.

  FIG. 12 shows a vehicle door structure 300 according to a first comparative example. As shown in FIG. 12, the front side door 310 to which the vehicle door structure 300 is applied has an inner weather strip provided with a mounting portion 304 having a substantially U-shaped cross section with an opening formed on the vehicle lower side. 302 is provided. The attachment portion 304 is attached to a joint portion between the upper edge portion 14A of the door inner panel 14 and the vertical wall portion 24A of the door inner reinforcement 24 with a plurality of clips (not shown). Two seal lips 36 that extend so as to protrude toward the wind glass 18 are provided in parallel on the top and bottom of the vehicle on the vertical wall 304A on the vehicle outer side of the mounting portion 304. The tip of the seal lip 36 is in sliding contact with the window glass 18. Note that the inner weather strip 302 is not provided with a through hole and a closed space behind the vertical wall 304A facing the wind glass 18 as in the first embodiment.

  In this vehicle door structure 300, the tip of the seal lip 36 is in contact with the inner wall surface of the window glass 18, but the tip of the seal lip 36 cannot be strongly pressed against the window glass 18. There is a possibility that the sound insulation performance of the contact point with the glass 18 is lowered. For this reason, as indicated by the arrow 306, there is a possibility that sound outside the front side door 310 (noise outside the vehicle, etc.) may enter the vehicle interior from the gap between the tip of the seal lip 36 and the windshield 18.

  On the other hand, in the vehicle door structure 28 of the present embodiment, a through hole 38 is provided in the vertical wall 32A between the two seal lips 36, and a closed space S is formed behind the through hole 38. A one-degree-of-freedom spring mass system 60 (see FIG. 5) is configured. Therefore, as shown in FIG. 5, when sound of a specific frequency hits the air mass 62 in the through hole 38, the mass 62 vibrates in the expansion / contraction direction of the spring 64. As a result, the sound energy changes to vibration energy, and the vibration energy changes to thermal energy due to the viscous resistance and friction of air, so that the sound of a specific frequency is significantly reduced. For this reason, the sound insulation of the sound which penetrates into the vehicle interior 26 from the outside of the vehicle can be improved.

  FIG. 13 shows a vehicle door structure 200 according to a second comparative example. As shown in FIG. 13, the front side door 210 to which the vehicle door structure 200 is applied is provided with an inner weather strip 204 including a wall body 206 in which a closed space S communicating with the through hole 38 is formed. ing. That is, as shown in FIGS. 13 and 14, the wall body 206 is formed in a rectangular hollow shape, and includes a vertical wall 206A on the vehicle width direction outer side, a bottom wall 206B on the vehicle lower side, and a vehicle width. A vertical wall 206C on the inner side in the direction and an upper wall 206D on the vehicle upper side are provided. The vertical wall 206A on the outer side in the vehicle width direction is provided with a through hole 38 and two seal lips 36 above and below it, and a lip 40B that contacts the door trim 46 is provided at the upper end of the vertical wall 206A. ing. The upper wall 206D is provided with a lip 204A that contacts the door trim 46.

  In the vehicle door structure 200, as shown in FIGS. 13 and 14, the through-hole 38 and the wall body 206 having the closed space S are formed as a single inner weather strip 204. In other words, the inner weather strip 204 is provided with a through hole 38 formed in the vertical wall 206A between the two seal lips 36, and a wall body 206 having a closed space S behind the through hole 38. As with the vehicle door structure 28 of the first embodiment, a one-degree-of-freedom spring mass system 60 (see FIG. 5) is configured. Thereby, the sound of a specific frequency can be reduced and sound insulation can be improved.

  However, in the inner weather strip 204, the wall body 206 has a hollow shape, and the inside of the wall body 206 is a cavity (closed space S). Since the through hole 38 is added by post-processing, the through hole 38 does not exist immediately after the inner weather strip 204 is formed by extrusion.

  In the inner weather strip 204, since the wall 206 has a cavity, it is difficult to perform sizing at the time of molding. Here, the sizing means that a predetermined shape is given to the molten resin extruded by the extruder by applying a sizing die, and the molded shape is cooled and cured so that no deformation occurs until the next cooling step. That means.

  FIG. 15 schematically shows a state in which a sizing die is applied to a wall body 206 having a cavity (closed space S). As shown in FIGS. 15A and 15B, four sizing molds 220, 222, 224, and 226 are applied to the four surfaces of the wall body 206 from the periphery of the rectangular wall body 206. At that time, as shown in FIG. 15 (B), since the inside of the wall body 206 is a cavity surrounded by a wall, the sizing mold cannot be inserted therein, and the wall body 206 The whole cannot be cooled. That is, it is difficult to perform sizing on the wall body 206 having a cavity.

  On the other hand, in the vehicle door structure 28 of the present embodiment, as shown in FIGS. 2 and 7, the inner weather strip 30 includes a concave portion 32 having an opening 31 on the vehicle upper side. The closed space S is formed by bringing the lips 40 </ b> A and 40 </ b> C at the top of the concave portion 32 into contact with the inner wall portion of the door trim 46. That is, the concave portion 32 of the inner weather strip 30 has an open cross section.

  FIG. 8 schematically shows a state in which a sizing die is applied to the concave portion 32 having no cavity. As shown in FIGS. 8A and 8B, when sizing, four sizing dies 80, 82, 84, 86 are applied to the wall surface of the concave portion 32 from the periphery of the concave portion 32. At this time, since the concave portion 32 has the opening 31, the sizing die 80 is inserted into the concave portion 32, and the sizing die 80 hits the inner wall surface of the concave portion 32. At the same time, the sizing molds 82, 84, and 86 hit the outer wall surface (three surfaces) of the concave portion 32. Therefore, the entire concave portion 32 is cooled by being surrounded by the sizing dies 80, 82, 84, 86, and sizing becomes possible. Therefore, the inner weather strip 30 can be easily molded, and the shape, size, and other quality of the inner weather strip 30 can be ensured.

  On the other hand, if one side of the concave portion 32 is vacant, the closed cross section is lost, so that the effect of the spring mass cannot be obtained only by the inner weather strip 30 and the sound insulation is not improved. However, in the vehicle door structure 28 of the present embodiment, The closed space S is formed by closing the opening 31 by bringing the lips 40A and 40C on the upper portion of the concave portion 32 into contact with the inner wall portion of the door trim 46 (see FIG. 2). Thereby, the spring mass system 60 of 1 degree of freedom is comprised (refer FIG. 5), and sound insulation can be improved.

  Next, a second embodiment of the vehicle door structure according to the present invention will be described with reference to FIG. In addition, about the same component as 1st Embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 9, the inner weather strip 102 used in the vehicle door structure 100 includes a concave portion 32 having an opening 31 on the upper side of the vehicle, and the vehicle width direction outer side forming the concave portion 32. The vertical wall (wall) 32 </ b> A is provided with two seal lips 36 and a through hole 38 formed between the two seal lips 36. Further, the inner weather strip 102 includes an attachment portion 34 that extends inward in the vehicle width direction from the upper end portion of the vertical wall 32C on the vehicle width direction side that constitutes the concave portion 32 and is bent in an approximately L shape on the vehicle lower side. ing. The upper end portion of the vertical wall 32C is not provided with the lip 40C (see FIG. 2) as in the first embodiment. The attachment portion 34 of the inner weather strip 102 is attached to a joint portion between the upper edge portion 14A of the door inner panel 14 and the vertical wall portion 24A of the door inner reinforcement 24 by a plurality of clips (not shown). In this embodiment, the inner weather strip 102 is formed by extrusion molding.

  The door trim 106 used in the vehicle door structure 100 includes a rib 106A that protrudes from the lower surface of the upper end 47A of the base material 47 to the vehicle lower side (the vertical wall 32C side of the inner weather strip 102). The rib 106A extends in the vehicle front-rear direction along the inner weather strip 102, and the tip of the rib 106A is in contact with the upper end portion of the vertical wall 32C of the inner weather strip 102.

  The lip 40A formed at the upper end of the vertical wall 32A abuts against the inner wall of the door trim 106, and the rib 106A of the door trim 106 contacts the upper end of the vertical wall 32C, whereby the concave portion 32 of the inner weather strip 102 is formed. It is blocked. Thus, a closed space S is formed on the opposite side of the vertical wall 32A from the wind glass 18. The closed space S communicates with the through hole 38 of the vertical wall 32A. In other words, a closed space S is formed behind the through hole 38 of the vertical wall 32A with respect to the wind glass 18 by the concave portion 32 of the inner weather strip 102, the inner wall portion of the door trim 106, and the rib 106A.

  In the vehicle door structure 100 of the present embodiment, a through hole 38 is provided in the vertical wall 32A between the two seal lips 36, and a closed space S is formed behind the through hole 38, so that one degree of freedom is provided. A spring mass system 60 (see FIG. 5) is configured. Therefore, as shown in FIG. 5, when sound of a specific frequency hits the air mass 62 in the through hole 38, the mass 62 vibrates in the expansion / contraction direction of the spring 64. Thereby, the sound of a specific frequency is reduced remarkably and sound insulation can be improved.

  The concave portion 32 of the inner weather strip 102 has an open cross section, and a sizing die is inserted into the concave portion 32 during molding, and the sizing die hits the outer wall surface of the concave portion 32. Thus, the concave portion 32 is cooled. Accordingly, the concave portion 32 can be sized when the inner weather strip 102 is formed. For this reason, the inner weather strip 102 can be easily molded and the quality of the inner weather strip 102 such as the shape and dimensions can be ensured.

  Next, a third embodiment of the vehicle door structure according to the present invention will be described with reference to FIG. In addition, about the same component as 1st and 2nd embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 10, the inner weather strip 122 used in the vehicle door structure 120 includes a concave portion 124 having a substantially U-shaped cross section in which an opening 121 is formed on the vehicle lower side. The concave portion 124 includes a vertical wall (wall) 124A that extends outward in the vehicle width direction along the vertical direction of the vehicle, an upper wall 124B that extends inward in the vehicle width direction from the upper end of the vertical wall 124A, and a vehicle on the upper wall 124B. A vertical wall 124C extending from the inner end to the vehicle lower side. The lower end portion of the vertical wall 124A extends to the vehicle lower side than the lower end portion of the vertical wall 124C. The inner weather strip 122 includes two seal lips 36 provided on the vertical wall (wall) 124 </ b> A, and a through hole 38 formed in the vertical wall 124 </ b> A between the two seal lips 36.

  The concave portion 124 of the inner weather strip 122 is attached to a joint portion between the upper edge portion 14A of the door inner panel 14 and the vertical wall portion 24A of the door inner reinforcement 24 by a plurality of clips (not shown). A lip 122A extending inward in the vehicle width direction is provided at the lower end of the inner side surface of the vertical wall 124A, and the tip of the lip 122A is in contact with the upper edge portion 14A of the door inner panel 14. Further, a lip 122B extending on the upper side of the vehicle is provided on the upper surface of the upper wall 124B, and the tip of the lip 122B is in contact with the inner wall portion of the door trim 126.

  The door trim 126 used in the vehicle door structure 120 includes two ribs 126A and 126B protruding from the vertical wall portion 47B of the base material 47 to the vehicle width direction outer side (inner weather strip 122 side). The ribs 126 </ b> A and 126 </ b> B extend in the vehicle front-rear direction along the inner weather strip 122. The ribs 126A and 126B are arranged substantially parallel to the vehicle top and bottom, and the lower rib 126B is formed longer than the upper rib 126A. The tip of the upper rib 126A is in contact with the lower end of the vertical wall 124C of the inner weather strip 122, and the tip of the lower rib 126B is in contact with the vertical wall 24A of the door inner reinforcement 24.

  In the vehicle door structure 120, the concave portion 124 of the inner weather strip 122 is attached to the joint between the upper edge portion 14 </ b> A of the door inner panel 14 and the vertical wall portion 24 </ b> A of the door inner reinforcement 24. The tip of the rib 126A contacts the lower end of the vertical wall 124C of the inner weather strip 122, and the tip of the lower rib 126B contacts the vertical wall 24A of the door inner reinforcement 24. Further, the tip of the lip 122A of the inner weather strip 122 is in contact with the upper edge portion 14A of the door inner panel 14. As a result, a closed space S is formed on the opposite side of the vertical wall 124 </ b> A constituting the concave portion 124 from the window glass 18. The closed space S communicates with the through hole 38 of the vertical wall 124A. In other words, the recessed portion 124 of the inner weather strip 122, the inner wall and ribs 126 </ b> A and 126 </ b> B of the door trim 126, and the upper edge of the door inner panel 14 behind the through hole 38 of the vertical wall 124 </ b> A with respect to the windshield 18. A closed space S is formed by 14 </ b> A and the vertical wall portion 24 </ b> A of the door inner reinforcement 24.

  The vehicle door structure 120 of the present embodiment is provided with a through hole 38 in the vertical wall 124A between the two seal lips 36, and a closed space S is formed behind the through hole 38, thereby allowing one degree of freedom. A spring mass system 60 (see FIG. 5) is configured. Therefore, as shown in FIG. 5, when sound of a specific frequency hits the air mass 62 in the through hole 38, the mass 62 vibrates in the expansion / contraction direction of the spring 64. Thereby, the sound of a specific frequency is reduced remarkably and sound insulation can be improved.

  Further, the concave portion 124 of the inner weather strip 122 has an open cross section, and a sizing die is inserted into the concave portion 124 during molding, and the sizing die hits the outer wall surface of the concave portion 124. Thus, the concave portion 124 is cooled. Therefore, the concave portion 124 can be sized when the inner weather strip 122 is molded. For this reason, the inner weather strip 122 can be easily molded, and the shape and size of the inner weather strip 122 can be ensured.

  Next, a fourth embodiment of the vehicle door structure according to the present invention will be described with reference to FIG. In addition, about the same component as 1st-3rd embodiment mentioned above, the same number is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 11, the vehicle door structure 140 includes an inner weather strip 142 attached to a joint portion between the upper edge portion 14 </ b> A of the door inner panel 152 and the vertical wall portion 24 </ b> A of the door inner reinforcement 154. The inner weather strip 142 includes a vertical wall (wall) 142 </ b> A arranged so as to contact the upper edge portion 14 </ b> A of the door inner panel 152. A stepped portion 142B is formed at the upper end of the vertical wall 142A so as to protrude inward in the vehicle width direction from the wall surface of the vertical wall 142A. The inner side surface of the vertical wall 142A is formed on the wall surface of the upper edge portion 14A of the door inner panel 152. The step 142B is in contact with the end surface of the upper edge 14A of the door inner panel 152. The inner weather strip 142 includes two seal lips 36 provided on the vertical wall 142 </ b> A, and a through hole 38 formed in the vertical wall 142 </ b> A between the two seal lips 36.

  A substantially circular through hole 153 is formed in the upper edge portion 14A of the door inner panel 152 in alignment with the through hole 38, and the vertical wall portion 24A of the door inner reinforcement 154 has a through hole 38. In addition, a substantially circular through hole 155 is formed in alignment with the through hole 153. Although not shown, the vertical wall 142A is formed with a plurality of through holes 38 in the longitudinal direction of the vehicle (see FIG. 3), and the through holes 153 and the through holes 155 are also provided in accordance with the positions of the through holes 38. It has been. The vertical wall 142A of the inner weather strip 142 is attached to the joint between the upper edge portion 14A of the door inner panel 152 and the vertical wall portion 24A of the door inner reinforcement 154 with a plurality of clips (not shown).

  The door trim 146 used in the vehicle door structure 140 includes two ribs 146A and 146B protruding from the vertical wall portion 47B of the base material 47 to the vehicle width direction outer side (inner weather strip 142 side). The ribs 146A and 146B extend in the vehicle front-rear direction along the inner weather strip 142. The ribs 146A and 146B are arranged substantially parallel to the vehicle top and bottom. The tip of the upper rib 146A is in contact with the vertical wall portion 24A of the door inner reinforcement 154 on the upper side of the through hole 38 as viewed in the vehicle longitudinal direction, and the tip of the lower rib 146B is below the through hole 38. It contacts the vertical wall portion 24A of the door inner reinforcement 154 on the side.

  In the vehicle door structure 140, the tip of the upper rib 146 </ b> A contacts the vertical wall portion 24 </ b> A of the door inner reinforcement 154 above the through hole 38, and the tip of the lower rib 146 </ b> B is the door below the through hole 38. By contacting the vertical wall portion 24A of the inner reinforcement 154, a closed space S is formed on the opposite side of the vertical wall 142A from the wind glass 18. The closed space S communicates with the through hole 38 of the vertical wall 142A. In other words, a closed space S is formed behind the through hole 38 of the vertical wall 142A with respect to the window glass 18 by the inner wall portion and the ribs 146A and 146B of the door trim 146 and the vertical wall portion 24A of the door inner reinforcement 154. Yes.

  The vehicle door structure 140 of the present embodiment is provided with a through hole 38 in the vertical wall 142A between the two seal lips 36, and by forming a closed space S behind the through hole 38, thereby allowing one degree of freedom. A spring mass system 60 (see FIG. 5) is configured. Therefore, as shown in FIG. 5, when sound of a specific frequency hits the air mass 62 in the through hole 38, the mass 62 vibrates in the expansion / contraction direction of the spring 64. Thereby, the sound of a specific frequency is reduced remarkably and sound insulation can be improved.

  Further, since the vertical wall 142A of the inner weather strip 142 has a substantially plate shape, the vertical wall 142A is cooled by contacting the sizing molds from both sides of the vertical wall 142A during molding. Therefore, sizing is possible when the inner weather strip 142 is formed. For this reason, the inner weather strip 142 can be easily molded, and the quality such as the shape and dimensions of the inner weather strip 142 can be ensured.

  In the vehicle door structure of the first to fourth embodiments, the number of the seal lips 36 is two, but the number of the seal lips 36 may be increased to three or more.

  In the first to fourth embodiments, the plurality of through holes 38 formed in the vertical wall facing the window glass 18 have a circular shape having substantially the same size, but the plurality of through holes (openings). May have different shapes. Moreover, although the through-hole is circular shape, it is good also as other shapes, such as a triangle, a square, and a polygon. In addition, although the shape of a through-hole is not ask | required, since a through-hole is opened with a trim on manufacture, circular is preferable.

  In the first to fourth embodiments described above, the vehicle door structure is provided on the front side door. However, the present invention is not limited to this and can be applied to other vehicle doors such as a rear side door.

10 Front side door (vehicle door)
12 Door body 18 Wind glass (door glass)
28 Vehicle Door Structure 30 Inner Weather Strip (Weather Strip)
31 Opening 32 Recessed Part 32A Vertical Wall (Wall)
36 Seal lip 38 Through hole (opening)
40A Lip (weather strip)
40C Lip (weather strip)
46 Door Trim 100 Vehicle Door Structure 102 Inner Weather Strip (Weather Strip)
106 Door Trim 106A Rib 120 Vehicle Door Structure 121 Opening 122 Inner Weather Strip (Weather Strip)
122A Lip (weather strip)
124 concave portion 124A vertical wall (wall)
126 Door Trim 126A Rib 126B Rib 140 Vehicle Door Structure 142 Inner Weather Strip (Weather Strip)
142A Vertical wall (wall)
146 Door trim 146A Rib 146B Rib 152 Door inner panel 153 Through hole (opening)
154 Door inner reinforcement 155 Through hole (opening)

Claims (4)

A door body that supports the door glass to be movable up and down;
A weather provided with a wall provided in the door main body and having an opening formed at a position facing the door glass, and an elastically deformable seal lip disposed so as to protrude from the wall and slidably contact the door glass With strips,
A door trim that is provided on the inner side in the door width direction from the door glass in the door body, and that is disposed on the opposite side of the wall from the door glass and that communicates with the opening with the weather strip;
A vehicle door structure. The weather strip has a concave portion that is partially provided with the wall and has a concave cross section when viewed from the front-rear direction of the door,
The vehicle door structure according to claim 1, wherein the closed space is formed by an inner wall portion of the door trim closing the concave portion. A rib projecting to the weather strip side on the inner wall of the door trim;
The vehicle door structure according to claim 2, wherein an inner wall portion of the rib and the door trim closes the concave portion.   2. The vehicle door according to claim 1, further comprising: two ribs that are formed on an inner wall of the door trim so as to protrude toward the weather strip side and to contact a portion of the wall opposite to the door glass to form the closed space. Construction.

Images